Zim looks pretty cool. It reminds me of lightweight, HTML editors I used long ago. Also, makes me think one of them might be a nice substitute since they similarly have project's pages on the left. Categories and notes become folders/projects and individual pages. More powerful features maybe on content site. Maybe less on organization side since Zim is designed for that. I don't see much difference in usability if the editor was itself highly usable. Obviously, we aren't talking Dreamweaver or something. ;)
Are there specific features in this you think a HTML editor wouldn't have or would just be lots of trouble for?
Well, the HTML editing of Zim might be its weak point. The formatting is a bit finicky and if you change the styling too many times it sometimes gets in a situation where I cut-copy in a text editor and paste it back to restart with no styling.
Aside from that, it has lots of plugins and can easily be exported to a full website. In fact, Zim's website is made with Zim http://zim-wiki.org/.
Bu the killer feature is that it's a wiki: you can link pages together and easily re-organize them. It's fully searchable and you can embed rich content. Also, all the pages are stored as ReST documents (I would have preferred Markdown), which makes them editable with a text editor. Also, Zim can use Git or Hg for version control.
Zim strikes me as trying to get at some of the same features/conveniences of things like Notion (https://www.notion.so) or Slite (https://slite.com), though both of those focus heavily on the team-collab audience. Like, it’s an editor because, well, it has to be, like Evernote also has to be an editor, but the main point is the organization, hierarchies, access to nice simple default layouts you don’t have to code yourself, and nifty widgets/utils that know how to work with all the other parts. (Correct me if I’m way off base though, because I’ve totally not tried it yet.)
Zim actually seems like it might be exactly the sort of thing I’ve been looking for lately, though; have been trying out various things like the ones above (Notion, etc) and... not sure why, but apparently I don’t want to use anything that slick more than once.
Notion is actually really awesome, they got everything right, except the pricing (in my opinion). Zim is far from perfect, but its extensibility, plain-text storage format and most importantly, Wiki features make it quite useful.
I would love, however, to have Zim with a better editor, one that would use typed blocks like Notion.